Stovepipe-drum.



No. 848,689. 'PATENTED APR. 2, 1907.

J. J. ROBERTS.

STOVBPIPE DRUM.-

APPLIQATIOI? FILED JUNE 1, 1905. RENEWED SEPT. 27, 1906.

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JOHN J. ROBERTS, OF LOYAL, WISCONSIN.

STOVEPlPE-DRUIVI.

Specification of Letters Patent.

Patented April 2, 1907.

Application filed June 1, 1905. Renewed September 2'7, 1906. Serial No. 336,498.

To all Ly/1,0772, it may concern:

Be it known that I, JOHN J. RoBEnTs, a citizen of the United States, residing at Loyal, in the county of Clark, State of Wisconsin, have invented certain new and useful Improvements in Stovepipe-Drums; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to heating-drums,

and has for its object to provide an improved structure to be used as a section of the smokepipe from an ordinary stove and wherein the heat from the drum may be varied to some extent.

In the drawings, Figure 1 is a vertical section through the heating-drum, a portion of a stove and its smoke-pipe being shown in elevation. Fig. 2 is a vertical section at right angles to Fig. 1. Fig. 3 is a detail plan view of one of the deflectors or baffle-plates.

Referring now more particularly to the accompanying drawings, the reference character 1 designates the outer casing of the drum, having a smoke-inlet pipe 2 leading inwardly from the bottom '3 thereof-and terminating short of the top 4 of the drum, the said pipe 2 being connected at its lower end to a short pipe 5 in the top of the stove 6. Positioned within the casing 1 in the side thereof opposite to the side at which the pipe 2 is disposed is a smoke-outlet pipe 7, communicating with the opening 8 of the outlet '4 of the casing and terminating short of the lower end 3 of the latter.

Disposed within the casing 1, near the bottom thereof and between the aforesaid smokepipes 2 and 7, is a cylindrical heatingcham ber 9, disposed in a horizontal plane, there being openings 10 and 11 formed in the top and bottom of the said chamber, the lower opening 11 receiving a short tube or pipe connection 12, whose lower end fits into the opening 13, arranged centrally of and in the bottom 3 of the casing 1. Atmospheric air passes through the opening 13 and pipe 12 into the heating-chamber 9 and upwardly therefrom to a second air-chamber 14 by way of a second pipe connection fitting the opening 10 of the first air-chamber and lead' ing into the bottom of thesecond airchamber 14, the air passing from the said second air-chamber 14 by way of the pipe-section 16 to a third air heating chamber 17, from which latter the heated air may pass outwardly through the central opening 18 in the top 4 of the casing 1 by way of the short pipe connection 19. It will be understood that as the air passes through the air-heating chambers it becomes heated by reason of the temperature within the drum incident to the circulation or passage of smoke through the latter, and it will be understood also that if desired any suitable pipe connection (not shown) may be connected to the collar 20, surrounding the aforesaid central opening 18 in the top 4. Of course when the connected pipe, just alluded to, but not shown in the drawings, is not used the heated air will pass through the said opening 18 and circulate in the room in which the drum is located.

Each of the heating-drums 9, 14, and 17 is provided with a deflector-plate 21, whose opposite sides and ends are concaved to permit of the passage of the air between the said sides and ends and the interior walls of the heating chambers. These defiectorplates are arranged upon an upward incline with respect to the position of the heating-chambers, thereby causing arapid upward flight of the heated air.

Disposed in the line of the smoke-outlet pipe 7 and directed outwardly therefrom and inwardly of the casing 1 is a third tube 22, which is disposed above the uppermost heating-chamber 21 and almost in contact with the inner surface of the top 4. The free end of this third tube connection 22 is provided with a closure 23, pivoted at the top thereof, and when-this damper or closure 23 closes the tube connection 22 the smoke entering through the smoke-pipe connection 22 is compelled to pass downwardly within the drum and circulate therein between the said heating-drums, for when the said damper is in its closed position the smoke is compelled to take such course as to pass outwardly of the drum by way of the smoke-outlet pipe 7, whose lower end terminates short of the bottom of the drum for this purpose. It is therefore obvious that when the smoke is compelled to circulate around the heating chambers in the manner just stated the air passing through the latter becomes heated to a greater temperature than would be the case if the smoke passed directly from the upper end of the smoke-inlet pipe 2 over to the tube connection 22 and outwardly at the upper end of the smoke-pipe outlet 7. However, there are times when it is best to direct the IIO smoke over the latter course, for which purpose the damper 23 is hingedly mounted, so that it may be opened through the instrumentality of a Wire or other connection 24, which is connected thereto at one of its ends and passed through an opening in the top 4 of the drum, the said wire or other connection 24 being of such length as to extend downwardly exteriorly of the casing 1 for engagement in the hook 25 when the damper is open, it being understood that the damper will be closed whenever the wire or connection 24 is not engaged in the hook 25.

Of course provide a damper 26 in the short pipe connection 5 of the stove 6 for the purpose of preventing the products of combustion passing into the drum, if desired.

It will thus be seen from the foregoing that the bottom of the heating-drum is disposed slightly above the upper face of the stove 6 and that atmospheric air is heated in its flight through the drum by reason of the circulation or passage of products of combustion through the drum.

That is claimed is A heating drum comprising a casing, a plurality of cylindrical chambers disposed horizontally Within the casing and extending alternately at right angles to each other, pipes connecting the chambers, pipes extending from the uppermost and lowermost chambers through the corresponding ends of the casing, a plate disposed longitudinally and centrally of each of the chambers and cut away between its corners, a smoke-inlet pipe extending through the lower end of the casing to the height of the uppermost chamber, a smoke-outlet pipe extending through the top of the casing to the height of the lower side of the lowermost chamber, and a damper in the upper portion of the last-named pipe above the chambers.

In testimony whereof I allix my signature in presence of two witnesses.

JOHN J. ROBERTS. l Vitnesses:

J. A. WELoH, F. F. SCHULTZ 

